While addressing supporters of the ruling All Progressives Congress (APC) at a meeting on Thursday, he had threatened Igbos who would not vote for the APC to stay off polling stations.
The statement had triggered a nationwide outrage, with many calling for his arrest.
Former Vice-President Atiku Abubakar had condemned the silence of President Muhammadu Buhari and the President-Elect, Asiwaju Bola Tinubu.